Diffusion flux inclusion for a reservoir simulation for hydrocarbon recovery
AssigneeLandmark Graphics Corporation
InventorsSaeedeh Mohebbinia, Terry Wayne Wong
Life of this patent
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Abstract
A method includes selecting a model for a simulation of hydrocarbon recovery from a reservoir having a plurality of fractures during injection of an injected gas into the plurality of fractures. Selecting the model includes determining a flux ratio of a convection rate to a diffusion rate for the reservoir, determining whether the flux ratio is less than a threshold, and in response to the flux ratio being less than the threshold, selecting the model that includes diffusion. Selecting the model includes performing the simulation of the hydrocarbon recovery from the reservoir based on the model.
Claims20
A method comprising:
- selecting a model for a simulation of hydrocarbon recovery from a reservoir having a plurality of fractures during injection of an injected gas into the plurality of fractures, wherein selecting the model comprises,
- determining a flux ratio of a convection rate to a diffusion rate for the reservoir;
- determining whether the flux ratio is less than a threshold;
- and
- in response to the flux ratio being less than the threshold, selecting the model that includes diffusion, and in response to the flux ratio being greater than or equal to the threshold, excluding diffusion from the modeling;
- and
- performing the simulation of the hydrocarbon recovery from the reservoir based on the model.
A method comprising
- creating a model for a simulation of hydrocarbon recovery from a reservoir having a plurality of fractures during injection of an injected gas into the plurality of fractures, wherein the model is arranged to:
- determine a flux ratio of a convection rate to a diffusion rate for the reservoir;
- in response to a determination that the flux ratio is less than or equal to a first flux threshold, define the reservoir as a diffusion dominated zone;
- in response to a determination that the flux ratio is greater than the first flux threshold and less than a second flux threshold, define the reservoir as a transition zone;
- in response to a determination that the flux ratio is greater than or equal to the second flux threshold, define the reservoir as a convection dominated zone;
- and
- in response to the reservoir being defined as at least one of the diffusion dominated zone and the transition zone, add diffusion to the model, and in response to the reservoir being defined as the convection dominated zone, removing diffusion from the model;
- and
- perform the simulation of the hydrocarbon recovery from the reservoir based on the model.
A method comprising:
- selecting a model for a simulation of hydrocarbon recovery from a reservoir having a plurality of fractures during injection of an injected gas into the plurality of fractures, wherein selecting the model comprises,
- determining a flux ratio of a convection rate to a diffusion rate for the reservoir;
- determining whether the flux ratio is less than a threshold;
- and
- in response to the flux ratio being less than the threshold, selecting the model that includes diffusion, and in response to the flux ratio being greater than or equal to the threshold, excluding the diffusion from the modeling;
- performing the simulation of the hydrocarbon recovery from the reservoir based on the model;
- and
- controlling at least one operational parameter of a gas injection operation performed on the reservoir based, at least in part, on a result of the simulation.
Dependencies are inferred from the claim text.